Subsea permafrost organic carbon stocks are large and of dominantly low reactivity
Subsea permafrost carbon pools below the Arctic shelf seas are a major unknown in the global carbon cycle. We combine a numerical model of sedimentation and permafrost evolution with simplified carbon turnover to estimate accumulation and microbial decomposition of organic matter on the pan-Arctic s...
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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/372201 2024-04-28T08:07:41+00:00 Subsea permafrost organic carbon stocks are large and of dominantly low reactivity Miesner, Frederieke Overduin, Pier Paul Grosse, Guido Strauss, Jens Langer, Moritz Westermann, Sebastian Schneider von Deimling, Thomas Brovkin, Victor V.B. Arndt, Sandra 2023-12 1 full-text file(s): application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/372201 https://dipot.ulb.ac.be/dspace/bitstream/2013/372201/1/doi_355845.pdf en eng uri/info:doi/10.1038/s41598-023-36471-z uri/info:pmid/37296305 uri/info:scp/85161652536 https://dipot.ulb.ac.be/dspace/bitstream/2013/372201/1/doi_355845.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/372201 1 full-text file(s): info:eu-repo/semantics/openAccess Scientific reports, 13 (1 Phénomènes atmosphériques info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2023 ftunivbruxelles 2024-04-10T00:12:21Z Subsea permafrost carbon pools below the Arctic shelf seas are a major unknown in the global carbon cycle. We combine a numerical model of sedimentation and permafrost evolution with simplified carbon turnover to estimate accumulation and microbial decomposition of organic matter on the pan-Arctic shelf over the past four glacial cycles. We find that Arctic shelf permafrost is a globally important long-term carbon sink storing 2822 (1518–4982) Pg OC, double the amount stored in lowland permafrost. Although currently thawing, prior microbial decomposition and organic matter aging limit decomposition rates to less than 48 Tg OC/yr (25–85) constraining emissions due to thaw and suggesting that the large permafrost shelf carbon pool is largely insensitive to thaw. We identify an urgent need to reduce uncertainty in rates of microbial decomposition of organic matter in cold and saline subaquatic environments. Large emissions of methane more likely derive from older and deeper sources than from organic matter in thawing permafrost. SCOPUS: ar.j info:eu-repo/semantics/published Article in Journal/Newspaper Arctic permafrost DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Phénomènes atmosphériques |
spellingShingle |
Phénomènes atmosphériques Miesner, Frederieke Overduin, Pier Paul Grosse, Guido Strauss, Jens Langer, Moritz Westermann, Sebastian Schneider von Deimling, Thomas Brovkin, Victor V.B. Arndt, Sandra Subsea permafrost organic carbon stocks are large and of dominantly low reactivity |
topic_facet |
Phénomènes atmosphériques |
description |
Subsea permafrost carbon pools below the Arctic shelf seas are a major unknown in the global carbon cycle. We combine a numerical model of sedimentation and permafrost evolution with simplified carbon turnover to estimate accumulation and microbial decomposition of organic matter on the pan-Arctic shelf over the past four glacial cycles. We find that Arctic shelf permafrost is a globally important long-term carbon sink storing 2822 (1518–4982) Pg OC, double the amount stored in lowland permafrost. Although currently thawing, prior microbial decomposition and organic matter aging limit decomposition rates to less than 48 Tg OC/yr (25–85) constraining emissions due to thaw and suggesting that the large permafrost shelf carbon pool is largely insensitive to thaw. We identify an urgent need to reduce uncertainty in rates of microbial decomposition of organic matter in cold and saline subaquatic environments. Large emissions of methane more likely derive from older and deeper sources than from organic matter in thawing permafrost. SCOPUS: ar.j info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Miesner, Frederieke Overduin, Pier Paul Grosse, Guido Strauss, Jens Langer, Moritz Westermann, Sebastian Schneider von Deimling, Thomas Brovkin, Victor V.B. Arndt, Sandra |
author_facet |
Miesner, Frederieke Overduin, Pier Paul Grosse, Guido Strauss, Jens Langer, Moritz Westermann, Sebastian Schneider von Deimling, Thomas Brovkin, Victor V.B. Arndt, Sandra |
author_sort |
Miesner, Frederieke |
title |
Subsea permafrost organic carbon stocks are large and of dominantly low reactivity |
title_short |
Subsea permafrost organic carbon stocks are large and of dominantly low reactivity |
title_full |
Subsea permafrost organic carbon stocks are large and of dominantly low reactivity |
title_fullStr |
Subsea permafrost organic carbon stocks are large and of dominantly low reactivity |
title_full_unstemmed |
Subsea permafrost organic carbon stocks are large and of dominantly low reactivity |
title_sort |
subsea permafrost organic carbon stocks are large and of dominantly low reactivity |
publishDate |
2023 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/372201 https://dipot.ulb.ac.be/dspace/bitstream/2013/372201/1/doi_355845.pdf |
genre |
Arctic permafrost |
genre_facet |
Arctic permafrost |
op_source |
Scientific reports, 13 (1 |
op_relation |
uri/info:doi/10.1038/s41598-023-36471-z uri/info:pmid/37296305 uri/info:scp/85161652536 https://dipot.ulb.ac.be/dspace/bitstream/2013/372201/1/doi_355845.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/372201 |
op_rights |
1 full-text file(s): info:eu-repo/semantics/openAccess |
_version_ |
1797576737605812224 |